Vodavi Infinite Dvx I, Dvx Ii Hybrid Key Telephone Systems Installation Manual

							r 
irifbriie DVX’andDVX” 
LIST OF TABLES Di&alKcyTclephoneSpetems 
LIST OF TABLES 
SECTION LOO I.NTRODUcTION . . . . . . l .* . . . . . . . . . . . . . . . . . . . l ..** . . . . . . . . . . . . . . . . . . . . . . . . . ..r... 100-I 
SECTION 200 GENERAL DESCRIPTION 
.................................................. 200-l 
Table 200- 1 - Digital System Capacities .................................................................... 200-35 
Table 200-2 . Electrical Specifications ...................................................................... 200-37 
Table 200-3 - Environmental Specifications 
.............................................................. 200-37 
Table ZOO-4 - Loop Limits 
......................................................................................... 200-38 
Table ZOO-5 - Dialing Specifimtions 
.......................................................................... 200-38 
Table 200-6 . 
FCC Registration Numbers .................................................................. 260-38 
Table 200-7 - Dimensions and Weight ...................................................................... 200-39 
Tabie 200-8 - Miscellaneous Specifications 
............................................................... ZOO-40 
Table 200-9 . DigitaI Terminal Audible Signals ......................................................... 
200-4 1 
Table 2OO- 10 - Single Line Telephone Audible Signals.. ............................ 
.‘. ............... 
200-4 1 
Table 200- 11 - OPX Telephone Audible Signals.. ...................................................... 
-200-42 
Table ZOO- 12 . DSS/BLF Button Visual Lndieators ................................................... 
200-43 
Table 200- 13 - CO Line Button 
Visual Indicators ...................................................... 200-43 
Table 200-14 - Function Button Visual Indicators 
................................................... -200-43 
SECTION 300 KEY STATlON FEATURE DESCHPTION ............................ 300-l 
Table 300- 1 Key Station Feature Index ....................................................................... 
300-2 
SECTION 310 
SINGLE IJNE ‘I‘ELEP3ONE FEATURE DESCRIPTION 
........ .3X0-1 
Table 
3 lO- 1 Single Line Telephone (SLT) Feature Index 
............................................... 310-2 
SECTION 320 ATTENDANT FEATURE DESCIUPTION .............................. 320-l 
Table 320- 1 Attendant Feature Index 
.......................................................................... 320-2 
SECTION 400 
STATION FEATURE OPERATION ....................................... dQ0-1 
Table 40@1 DigftalTerminal Numberjng Plan.. 
........................................................... 400-3 
Table 
400-2 Flex Button programming Codes 
........................................................... 400-20 
SECTION 406 8-BU‘llWN KEYSET FEATURE OPERATION .................... ...405- 1 
Table 405-l Digital System 8-Button Numbering Ran ................................................ 
405-3 
SECTION 410 
SLT FEATURE OPERATION ............................................... 410-l 
. 
Table 4 1 O-1 Digital System SLT Numbering Plan 
........................................................ 4 10-2 
SECTION 420 ATlENDANTFEATURE OPERATION ................................. 420-l 
Table 420- 1 Digital System Attendant Numbering Ran ............................................... 420-3 
Table 430-l Liqtid Crystal Displays (LCD) 
.................................................................. 430-r 
SECTION 500 
INSTaTION ................................................................. 500-l 
Table 500- 1 Basic KSU 
Jl 1 Station Connections 
........................................................ 500-8 
Table 500-2 
Expansion KSU Jl 1 Station Connections .............................................. 500-l 1 
Table 
50&3 2x4 Expander Module Jl 1 BKSU Connections 
....................................... 500-14 
Table 5OG4 2x4 Expander Module Jll EKSU Connections.. ..................................... 
500-15 
‘hide 500-5 2x4 SLT Expander Module Jl 1 BKSU Connections ................................ 500-17 
Ta?de 500-6 2x4 SLT Expander Module Jll EKSU Connections ................................ 
500- 18 
Table 500-7 
4~8 Expander Module EKSU Station Connections ................................. 500-23 
Iseut 1. January 1993  
						

							imite DVX I and DVX’ 
Digital Key Telephone 
Systems LET OF TABLEG 
Table 500-8 4x8 Key Interface Board (CKB) ............................................................... 500-32 
Table 500-9 4x8 SLT Interface 3oard (CSB) ............................................................... 500-35 
Table 5ClO- 10 
PFTU COM A Connecting Block ........................................................... 500-52 
Table 500- 11 PFTU Conn B Connecting Block 
........................................................... 500-52 
Table 5OO- 12 SMDR Printout .................................................................................... 
500-58 
SECTION 600 
SYSTEM cHEcK-ouT 
...................................... l ............... 600-I 
6EcTION700 CUSTOMER DATA BASE PROG RAMMING ......................... 700-1 
Table 70s 1 Default Values ......................................................................................... 
700-4 
SECTION710 
SYSTEM P ARAMETERS PROGRAMMING 
.......................... 710-I 
SECTION720 CO IJNEiATTRIBUlm3 PROGRAMHING ............................ 
720-l 
Table 720-l Class ofService (COS). 
............................................................................ .720-8 
SECTION730 
STATION ATTRIBUTES PROGRfWMtNG ....... .., . l ............... 750-l 
Table 730-l Class ofService (COS) ............................................................................ 
730-13 
Table 730-2 FQxibIe Button Display Designations ...................................................... 730-Z 1 
SEcTloN740 
AUTOMATIC 42U.L DISTRIBUTION @CD) ....................... l .. 740-l 
SECTION74Ei UNIFORM CALL DISTRIBUTION (UCD) . ............................. 748-l 
SECMON750 
ICLID PROGRAMlKlNG ............................. l ........ l .............. 750-I 
SECTION 75s 
VOICE MAIL GROUPS fVM) ... .,L ... l .* ........ l ................. l ........ irsfi-l 
SECTION760 
EXCEPTION TABLES PROG-G 
*..., ......................... 760-l 
Table 760-l Class of Service (COS) 
.............................................................................. 760-l 
Table 760-2 Allow/Deny Toll Table ............................................................................. 
760-2 
SECTION766 
LEAST COST ROUTING &CR) PROGRAMMING ..... l ........... 
705-l 
Table 765- 1 LCR Class of Service Table 
....................................................................... 765-8 
SECTION 
770 
INM!MWZ DATABASE PARAMETERS 
............................. 770-1 
SECTION 776 PRINTING SYSTEM DATARASE PARAZYIETERS ........... ..a ... 775-l 
S-ON SO0 
MAINTENANCE ANTI TROUBLESHOOTING 
................... m 
.... 8Oo- 1 
- 
Table 80&l DVX’ BKSU Digital System 
..................................................................... 
800-l 
Table 800-2 DVX ’ Digital System EPROM Memory Size 
.............................................. 
800- 1 
Table 800-3 DVX ’ Static RAM Memory Size 
................................................................ 
800- 1 
Table 800-4 DVX ’ Central Processing Board (CPB) 
..................................................... 800-2 
Table 800-5 DVX ’ CPB Static RANl Memory Size 
........................................................ 800-2 
Table 800-6 4x8 Key Interface Board (CKB) 
................................................................. 800-3 
Table 800-7 4x8 SLT Interface Board (CSB) 
................................................................. 
800-3 
Table 800-8 DVX ’ CPB EPROM Memory Size 
............................................................. 
800-3 
Table 80&9 DTMF Receiver Module (RM) 
.................................................................... 
800-4 
Table 800- 10 I/O Module (IOM) 
.................................................................................. 
800-4 
Table 8OO- 11 Single Line Telephone Adapter (OPX) 
................................................... ..800- 4  
						

							L16T OF TABLES irlfinite 
DVX’ and DVX’ 
Digftd Key Telephone Systema 
APPENDLXA CUSTOMER DATABASE PROGRABKMING .............................. A-l 
Appendix A- 1 System Parameters ................................................................................... A-l 
Appendix A-2 Hunt Group, ACD and UCD Group Parameters ......................................... A-3 
Appendix A-3 Voice Mail Group 
Parameters .................................................................... A-4 
Appendix A-4 CO Lme Progmmming Wash 40) ............................................................... A-5 
AppendixA- COLme FQngingAssignment Chart .......................................................... A-7 
Appendix A-6 Station Programming (Flash 50) ................................................................ A-0 
Appendix A-7 Button Assignment Chart @‘lash 50) ......................................................... A-9 
Appendix A-8 System Speed Dial Numbers ................................................................... A-10 
Appendix A-9 Exception Tables (Flash 70) .................................................................... A-12 
Append& A- 10 Least Cost Routing (Flash 75) 
............................................................... A-14 
Appendix A- 1 I Route L&t Table 
.................................................................................... A-15 
Appendfx A-12 Insert/Delete Tables ............................................................................. A-19 
Appendix A-13 3-Digit Area/CHkt Code Route L&t Table ............................................ A-21 
Appendix A-14 digit #fEke Code Table ....................................................................... A-22 
AppendixA- LCR Exception Code Table .................................................................... A-23 
APPENDIX B DIGITAL SYSTEBt¶S PART NUMBl5RS .................................... El 
Appendix B- 1 DlgitaI System Component List 
................................................................. B-l 
APPENDIXC 
ICLID GENERAL DESCRIPTION ............................................ C-l 
. 
Issue 1, January 1993  
						

							r 
iqjlnite DVX*andDVXn 
Di&d Eey Telephone Systems 
LIST OF TABLE-S 
ISSUE CONTROL SHEET 
1 lSSuJ3 i 
DATE 
I CHANGE 
1 b 
! Issue 1 January. 1993 
I ‘Initial Release of the ir&ife DVX’ & Dvx” Digital System 
General Description. hstallation 
and Maintenance MamaI ! 
i 
I~auc 1, January 1993  
						

							iqjinite DVX’ and DVX’ 
D&itd Eey Telephone Systems 
INTRODUCTION 
SECTION I.00 
INTRODUCTION 
100.1 PURPOSE 
This manual provides the information neces- 
sary to program, install, operate and maintain 
the i&in&z DigitaI Key Telephone System. 
100.2 REGULATOFtY INPORMATION 
(u.8.A) 
The Federal Communications Commission 
(FCC) has established rules which a&w the 
direct connection of the injir&eDigital Key Tele- 
phone System to the telephone network. Cer- 
tain actions must be undertaken or understood 
before the connection of customer provided 
equipment is completed. 
A. TdephoneCompanyNotifkatfon 
Before cm.neciing the ir3finfte Digital Key 
Telephone System to the telephone net- 
work, the local serving telephone company 
must be given advance notice of intention 
to use customer provided equipment and 
prwided with the following information: 
l The telephone numbers to be connected 
to the system. 
l The Ringer Equivalence Number also Io- 
cated on the KSU: 1.9 
. The Universal System Ordering Code 
(USOC) jack required 
for direct intercon- 
nection with the telephone network 
w2 1x 
DVX’ FCC Re@tration Number8: 
- For systems comigured as a key system: 
lbutton appearances) 
DLPHKG-65152~KF-E 
- 
- For systems cor@ured as a Hybrid sys- 
tem: (dial access codes) 
DLPHKG-65 153~ME-E 
DVX = FCC RcgietrafAon Numbers: 
- For systems configured as a key system: 
(button appearances) 
DWHKG-65102~KF-E 
- For systems configured as a Hybrid sys- 
tern: (dial access codes) * 
DLPHKG65101-MF-E 
B. 
Incidence of warm 
If the telephone company determines that 
the customer provided equipment is faulty 
and p~~~l%ly causing harm or interruption to the telephone network, ft should be dis- 
connected until repairs can be made. If this 
is not done, the telephone company may 
temporarily disconnect service. 
c. Changce ill service 
The loczil telephone company may make 
changes in its communications facilities or 
procedures. If these changes should affect 
the use of the ~I.I. DigitaI Key Telephone 
System or compatibility with the network. 
the telephone company must give written 
notice to the user to &xv uninterrupted 
semice. 
D. MaintcnanctLimitatio~s 
Maintenance on the infinUe Digital Key 
Telephone System is to be performed only 
by the manufacturer or its authorized 
agent. The user may not make any changes 
and/or repairs except as specifically noted 
in this msnuaI. Ifunauthorized alterations 
or repairs are made, any remaining war- 
ranty may be voided. 
E. Notice of Compliance 
The intite Digital Key Telephone System 
complies with rules regarding radiation 
and radio frequency emissions by Class A 
computing devices. In accordance with 
FCC Standard 15 [SubpartJ). the following 
information must he suppled to the end 
user: 
This equipment generates and uses 
RF energy and if not tnstalled and 
used in accordance wftb the Instruc- 
tion Manual, may cause interference 
to Radio Communications. It has been 
tested and found to comply with the 
limits for a Class A computing device, 
PursuanttoSubpartJofFart Eofthe 
FCC Rules. which are designed topro- 
vide reasonable protection against 
such interference, when operated in a 
commercial environment. Operation 
of this equipment in a residential area 
is likely to cause interference, fn which 
case the user, at his own expense, will 
Issue 1, January 1993 
100-I  
						

							r 
INTRODUCTION infinite DVX ’ and DV2L’ 
Digital Key Telephone Spstems 
be required to take whatever measures 
may be required to correct the inter- 
ference.” 
F. 
Hearing Aid cOmpat?bility 
AI1 infinrte Digital Terminals are Bearing 
Aid Compatible, as defined in Section 
68.316 of Part 68 FCC Rules and Regula- 
tions. 
G. OPX Circutt 
The in&&e Digital Key Telephone System 
may be equipped with Single Line Adapters 
(OF%) modules which provide a 48V FCC 
registered 2500~type single line off-prem- 
ise extension interface port. 
l Each OPX port when used to support an 
off-premise extension requires an 
OL13C network circuit. 
0 An FCC registered interface such as a 
RJl lC/W is also required to connect to 
the public network 
loo.3 REGULATOZWINFORMATION (CA- 
NADM+Jl 
l Department of CommLmieations [DOC} 
CerHGcation Number: 526 2933 A 
l Load Number: 20 
l Standard Connector: CA1 lA/CA2 lA 
l Canadian Standards Association (CSA) 
File Number: I357228 
A. Notice 
The Canadian Department of Communica- 
tions* label identifies certified equipment. 
This certification means that the equip- 
ment meets certain 
tdec0rnmunic2tions 
network protective, operational and safety 
requirements. This Department does not 
guarantee the equipment will operate to 
- the user’s satisfaction. 
Before instalhg this equipment, users 
should ensure that it is permissible to be 
connected to the facilities of the local tele- 
communications company. The equipment 
must also be installed using an acceptable 
method of connection. In some cases, the 
company’s inside wiring associated with 
single he individual service may be ex- 
tended by means of a certified connector 
assembly (telephone extension cord]. The 
customer should be aware that compliance 
with the above condition may not prevent 
degradation of service in some situations. Repairs to certified equipment should be 
made by an authorized Canadian mainte- 
nance facility designated by the supplier. 
Any repairs or alterations made by the user 
to this equipment. or equipment ma&me- 
tions. may give the telecommunications 
company cause to request the user to dis- 
connect the equipment. 
Users should ensure for their own protec- 
tion that the electrical ground connections 
of the power utility, telephone lines and 
internal metallic water pipe system, if pre- 
sent, are connected together. ‘Ihis precau- 
tion may be particularly important in rural 
areas. 
Users should not attempt to make 
such connections themselves, but 
should contact the appropriate Alec- 
irk inspectton authority. or electri- 
cian, as appropriate. 
B. Explanation of ‘Load Number 
The Load Number (LN) assigned to each 
terminal device denotes the percentage of 
the total load to be connected to a tele- 
phone loop which is used by the dwice to 
prevent overloadmg. The termination on a 
loop may eons&t of any combination of 
devices subject only to the requirement 
that the total of the load numbers of all the 
devices does not exceed 100. 
c. hwntenancc XAmitatiolla 
Maintenance on the infinite Digital Key 
Telephone System is to be performed only 
by the manufacturer or its authorized 
agent. The user may not make any changes 
and/or repairs except as specif?cally noted 
in this manual. If unauthorized alterations 
or repairs are made, any remaining war- 
ranty may be voided. 
D. Notice of Compllarlce 
The infintte Digital Key Telephone system 
complies with Class A or Class B limits of 
the Canadian Radio Interference Regula- 
tions. ln accordance with FCC Standard 15 
(Subpart J). the following information 
must be supplied to the end usen 
100-Z 
Issue 1, January 1993  
						

							INTKODUCTION 
* CAUTION 1 
7Xs equipment generates and uses 
RF energy and if not installed and 
used in accordance with the Instruc- 
tion Manual, may cause interference 
to Radio Communications. It has been 
tested and found to comply with the 
limits for a Class A or Class B comput- 
ing device, 
pursuant to Subpart J or 
Part 15 of the FCC Rules. which are 
designed to provide reasonable protec- 
tion against such interference, when 
operated in a commercial tnviron- 
rnent. Operation of this equipment in 
a residential area is likely to cause 
interference, in which case the user, 
at his own expense. xvillbe required to 
take whatever measures may be re- 
quired to correct the interference.” 
E. OPXCirr.x& 
The infinite Digital Key Telephone System 
maybe equipped with Sfngle Line Adapters 
(OPXJ modules which provide a 48V FCC 
registered 25OWype single line off-prern- 
ise extension interface port. 
l A DOC registered interface such as a 
CA1 1 is also required to connect to the 
public network. 
100.4 
IJL/txA SAFETY co-CE 
The infinite Digital Key Telephone System has 
met all safety requirements and was found be 
in compliance with the Underwriters Laborato- 
ries (UL) 1459 Second Edition and Canadian 
Standards Association (CSA] C22.2, No. 225 
Standard. 
The h_fintte Digital Key Telephone 
System is authorized to bear the UL and CSA 
. marks. 
loo.5 TOLL 
FRAUD DISCLMMER 
‘WHlLE THIS DEVICE IS DESIGNE?D TO BE 
WONABLY SECURE AGAINST IWI’RU- 
SION5 FROM FRAUDULENT CAUiER5. IT 18 
BYNO-S 
KNVULNERABm TO FRAUD. 
TEEREFORE NO E 
XPRESS OR IMPLIED 
WARRANTY IS MADE AGAINST SUCH 
-UD ~CLtJDlNG lNTERCONNEOTION TO 
THE LONG DISTANCE NETWORKm” ‘WHILE THIS DEVICE IS DESIGNED TO BE 
REA5ONABLY SECURE AGAINST INVASION 
OF PRIVACY, IT IS BY NO MEAN5 INVUL- 
NERABLE TO SUCH INVASXONS. TKERE- 
FORE NO EXPRESS OR IMPLIED 
WARRANTP IS MADE AGAZNST UNL4WFClL 
OR UNAUTIIORIZED UllLIZATXON WHICH 
RESULTS m THE INVASION OF ONE’S 
RIGHT OF PRIVACY.-  
						

							D&itd Key Telephone Systen~~ GENERAL DESCRIPTION 
SECTION 200 
GENERAL DESCRIPTION 
200.X SYSTEM TECHNOLOGY 
?he infinue family of digital key telephone sys- 
terns is comprised of two f”$ digital herid key 
telephone systems, the DVX and DVX . These 
systems are designed to meet the telecommu- 
nications needs of a small to medium sized 
business ofihx.s. Both systems incorporate 
state of the art digital technology for command 
processing and voice switching utilizing a Pulse 
Code Modulation/Time Division Multiplexing 
(PCM/TDM) voice control module. The family of 
infinite Digital systems are also engineered to 
allow mfgration of the 
family of infinite digital 
terminals and terminal accessories throughout 
the entire product line. In addition. standard 
2500-type telephone devices are supported by 
use of a 2x4 SLT Expansion Module on the 
in- DVX I System, 4x8 SLT Interface Board 
(CSB) on the infinite DVX ’ System, or SLA 
(OPXJ adapters. 
The DVXI is the smallest member of the &~&i&z 
Digital family and fully [email protected] 
supports a 
maximum of 14 CO/PBX/Centrex lines and 28 
digital station devices. The DVX’ is a “flat pack”, 
or single mother board system with plug on 
modules expanding the system via expansion 
and expander modules configured with either 
two CO/PBX/Centrex lines by four stations or 
four CO/PE!X/Centrex lines by eight stations. 
A complete system capacity allows for use of up 
to 112 time slots for stations.CCl Lines. DlMF 
Receivers. or data switching modules. This ex- 
tends non-blocking access to alI system re- 
sotll-ces. 
-The DVX I Basic KSU comes fully configured 
with power supply, Common control processor. 
PCM/TDM Voice switching matrix and inter- 
face circuits for four CO/PBX/Centrex lLnes 
and interface circuits for eight Digital terminal 
stations. The Basic system is also equipped 
with one RS-232C I/O port. one DTMF receiver, 
a connector for one Music-On-Hold channel 
that also provides for background music, and 
an on-board 300 baud modem that provides 
access to the system for data base program- 
ming or remote maintenance and or 
diagnos- 
tics. Modules to provide additional I/O ports, 
and an opffona.I 1200 baud modem module can 
also be added to the system. 
The DVX Ii system is the largest system in a 
family of Digital Hybrid Key Telephone systems and supports a maximum configuration of 28 
CO/PBX/Centrex lines and 56 digital station 
devices. The DVXn is a typical KSU system with 
plug in PCB’s. The system capaciv is expanded 
by installing four circuit CO/PBX/Centrex 
lmes by eight circuit station expansion PCB’s. 
The complete system capacity allows for use of 
up to 112 tjme slots for stations, CO Lines, 
EYIMF Receivers, or data switchfng Modules. 
This extends virtual non-blocking access to all 
system resources. 
A Basic DVX ’ KSU ships complete with an 
on-board power supply. The CPB which is the 
only common equipment required for operation 
provides the micrbprocessor for command 
processing and Voice PCM/TDM switching. The 
CPB is also equipped with one modular RS- 
232C I/O port, a connector for one Music On 
Hold charme that also provides for background 
music, and an on-board 300 baud modem that 
provides access to the system for data base 
programming or remote maintenance and or 
diagnostics. Modules to provide additional I/O 
ports. and an optional 1200 baud modem mod- 
ule can also be added to the CPB. 
Both systems are installed using industry 
standard blocks, jacks and &&my wire cabling. 
This combined with the 
ability to program the 
system using a key terminal (digital display 
termfnal) reduces inshllation cost and mainte- 
nance requirements. 
All CO interfaces are equipped with transformer 
bar&m. for system &ssif?cation as an FCC 
fully protected system. Each CO circuit sup- 
ports rotary (out-pulse) dialing and loop super- 
vision (disconnect detection1 under softsvare 
control. The lYl7vIF tone signals and system 
supervisory tones can be generated in each 
keyset or on the main PCB. Both @nite Digital 
systems use a proprietary tone plan for provid- 
ing intema.l progress tones with the exception 
of OPX 
stations which are provided with a ypre- 
cise” tone plan. 
The infintte family of digital terminals include a 
33-button display and non-display stations, 
and an 8-button non-display station. Optional 
station terminals Include a Digital DSS Con- 
sole, and a Shxgle Line Adapter (Off-Premise 
Extension (OPX) adapter) which are all upward 
and downward compatible to the entire ti@-~ite 
digital product line. 
Issue I, January 
1993 200-I  
						

							GENERAL DESCRWMON @finite DVX’ and DVX” 
Digital Key Telephane systems 
The system architecture allows system pro- 
gramming changes to be made without inter- 
rupting state event software control of normal 
communications. Call processing continues 
while the customer data base is updated. All 
programming changes to the customer data 
base progrwg are made either 6-om a digi- 
tal terminal [digital display terminal) connected 
to Port 01 or from a data terminal or PC con- 
nected to either a If0 port or remotely via the 
on-board modem. 
The in- product line is tailored to meet 
immediate and long term customer needs. Most 
commonly used features are activated by direct 
button selection. However, many functions 
may be alternately accessed by dialing specific 
c-odes or as another option by assigning these 
dial codes to a FLEX button on a digital termi- 
naL l%fs permits flexible use of the i~jhite 
Dfgital systems. 
Future software enhancemuris and upgrades 
are easily retrofitted and fnstalled in the sys- 
tem. This will in most cases provide backward 
compatibility with existing infinite Digital hard- 
ware further reducing the cost to upgrade or 
add features to an installed system. 
200.2 COMMON EQtJfPMENT FOR TEE 
mm I SBTEM 
A. Basic Key Semke Unit with Power 
SuPPlY 0 
The DVX I Basic Key service Unit (‘KSU) is 
awall mountable cabinet that contains the 
main key service board WB). power sup- 
ply and pre-wired connectors for stations 
and CO Line interfaces. The DVX ’ DigitaI 
Key Telephone System is a microprocessor 
P33000) controlled, solid state electronic 
switch which distributes communications 
uskng Pulse Code Modulation/Time Divi- 
* sion MultipIexing (PCMJTDM) technology. 
Al control. switching and interface cir- 
cuitry is condensed onto a sjngle printed 
circuit board (PCB], the main key service 
board (KSB), located inside the key senoice 
unit WXJ). 
The Basic Key Service Unit ISKSU) is a 
system which comes fully coni3gured for 
four CO/PBX/Centrex lines and eight sta- 
tions. The Basic KSU also contains one 
RS-232C I/O port, one DTMFReceiver, one 
connector for Background Music and 
MU- 
sic on Hold. an on-board 300 baud modem 
POk and one external page port. The Basic 
KSU aIs contains two connectors for add- 
ing a 
2x4 Expander Module, or a 2x4 SLT Expander Module on connectors J9 and 
J 10. An optional I/O Module that adds dne 
additional RS-232C port and one M-422 
port, and an optional 1200 baud modem 
can be added to increase the speed of 
transmission of the on-board modem port. 
A Reset (Halt) switch and a background 
music volume control are also mounted on 
the PCB. In addition, two connectors are 
provided for adding an Expansion KSU 
which will allow the system to expand to a 
toti of 14 CO/PEX/Centrex lines and 28 
digital station ports. Refer to Figure 200- 1 
Main Key Service Board of the Basic KSU 
for the component layout and location of 
coIlnectors. 
Power SuppIyz 
The power supply, insbed in the Basic 
KSU at the time of manufacture. has an 
input voltage of 117V ac *lO%. The power 
supply provides power, a filtered/unregu- 
lated rtlZV de. to the main key service 
board. A slo-blow 1.5 amp fuse on the AC 
side of the transformer provides the neces- 
sary Are and overload protection. Power is 
regulated and distributed to stations/ cir- 
cuitry in the system on the main key sew- 
ice board. The power supply and cabinet 
meet all safety requirements to comply 
with UL 1459 Second Edition and CSA 
C22.2 No. 225 standards. 
CPU and Bknorg: 
The DVX I system is controlled by a 16-bit 
(68000) Enafn micro-processor which con- 
trols all system functions including the 
PCM/TDM voice switching under the di- 
rection of ROM and RAM software coding. 
The main key se&e board is responsl%le 
for all control functions, execution of all 
logic operations and control of system 
modules incIuding control over the cir- 
cuitry necessary for voice switching and 
conference connections. The main key 
service board is also responsible for all 
system tones. system timing. and station 
status control, In addition the mm key 
semice board provides software and hard- 
ware support of the folhwing: 
l Real ‘Time clock. 
l Watch dog tLmer and recovery. 
l PCB status as to presence/absence of 
modules for automatic software conf?gu- 
ration setup. 
l State/went software design. 
200-2 
lrrsue 1, dally 1993  
						

							irlfinite DVX’aadDVX” 
~~igitd Key Telephone Systems GENERAL DESCRIPTION 
; 
: .* 
: :: 
: :: 
0  : :: 
: i) 
is. 
Jl2 
F&urc 200-l Main Key serpicc Board of the Baafc KStl